Load chat auto_insert from config instead of passing it in contructor

This means it can be properly overriden when opening chat and also
follows same loading as other chat configuration already does

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

Author: deathbeam

lua/CopilotChat/chat.lua

@@ -30,15 +30,15 @@ function CopilotChatFoldExpr(lnum, separator)
   return '='
 end
 
-local Chat = class(function(self, help, auto_insert, on_buf_create)
+local Chat = class(function(self, help, on_buf_create)
   self.header_ns = vim.api.nvim_create_namespace('copilot-chat-headers')
   self.help = help
-  self.auto_insert = auto_insert
   self.on_buf_create = on_buf_create
   self.bufnr = nil
   self.winnr = nil
   self.spinner = nil
   self.separator = nil
+  self.auto_insert = false
   self.auto_follow_cursor = true
   self.highlight_headers = true
   self.layout = nil
@@ -220,6 +220,7 @@ function Chat:open(config)
 
   self.layout = layout
   self.separator = config.separator
+  self.auto_insert = config.auto_insert
   self.auto_follow_cursor = config.auto_follow_cursor
   self.highlight_headers = config.highlight_headers
 

lua/CopilotChat/init.lua

@@ -873,7 +873,6 @@ function M.setup(config)
   end
   state.chat = Chat(
     M.config.show_help and key_to_info('show_help', M.config.mappings.show_help),
-    M.config.auto_insert_mode,
     function(bufnr)
       map_key(M.config.mappings.show_help, bufnr, function()
         local chat_help = '**`Special tokens`**\n'